chartjs/Chart.js

Simple HTML5 Charts using the <canvas> tag

Stars: 67.7k
Forks: 11.9k
Open beginner issues: 0
Indexed issues: 496
Avg merge: 7h 39m
Merged PRs (30d): 5

Dominant language: JavaScript
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Open All

496 open issues indexed

Minor ticks support chart.js Open

type: enhancement

chartjs/Chart.js#11774 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Line chart rendering goes haywire Open

type: bug

chartjs/Chart.js#11775 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
How to apply gradient on the opposite side of the Line chart? Open

type: enhancement

chartjs/Chart.js#11778 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add ability to lock aspect ratio of the grid, ignoring title and labels Open

type: enhancement

chartjs/Chart.js#11783 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Adding configuration to `y` scale produces point shift in scatter type dataset Open

type: bug

chartjs/Chart.js#11786 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Tooltip: customize point style (like in legend plugin) Open

type: enhancement

chartjs/Chart.js#11787 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Rendered chart does not fit to canvas with fixed width, resulting in a cut in the output-render on the right side Open

type: bug

chartjs/Chart.js#11798 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
The tooltip is still visible on legend item hover Open

type: bug

chartjs/Chart.js#11801 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
A tooltip appears in the center of the chart on chart hover after hiding all data via legend click Open

type: bug

chartjs/Chart.js#11804 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Legend: maxHeight does nothing for positions left & right, maxWidth does nothing for positions top & bottom Open

type: bug

chartjs/Chart.js#11805 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Labels: textDirection does nothing Open

type: bug

chartjs/Chart.js#11806 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve Chart update performance with many datasets Open

type: enhancement

chartjs/Chart.js#11814 · 0 comments · 9 reactions · 0 assignees · Indexed Sep 14, 2026
In category axis, the last tick is not drawn if either maxTicksLimit or autoSkipPadding is specified. Open

type: bug

chartjs/Chart.js#11816 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Radial Graph Improvement Open

type: enhancement

chartjs/Chart.js#11820 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Chart grows forever when maintainAspectRatio is false Open

type: bug

chartjs/Chart.js#11821 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Horizontal legend multiline labels overlaps Open

type: bug

chartjs/Chart.js#11824 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Forced re-layout (reflow) when canvas has no fixed width/height Open

type: bug

chartjs/Chart.js#11826 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Image-Based Unit Tests Fail on Mac Open

type: bug

chartjs/Chart.js#11828 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
When defining an External implementation for Tooltip, chart.canvas.offsetLeft doesn't work when chart in a table Open

type: bug

chartjs/Chart.js#11830 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Custom bundle build Open

type: enhancement

chartjs/Chart.js#11831 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Not possible to set min/max for timeseries axis Open

type: bug

chartjs/Chart.js#11842 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
BorderOffset Not working Open

type: bug

chartjs/Chart.js#11843 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Legend title does not fit Open

type: bug

chartjs/Chart.js#11850 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Error when trying to run locally the chart.js samples Open

type: bug

chartjs/Chart.js#11852 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
pie chart segment stays selected after chart update Open

type: bug

chartjs/Chart.js#11853 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
$context not on type Element when accessing activeElements from click event Open

type: types

chartjs/Chart.js#11857 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Inconsistent spacing below chart title Open

type: bug

chartjs/Chart.js#11864 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
htmlLegend is missing in PluginOptionsByType in TypeScript 5.5.3 definitions Open

type: types

chartjs/Chart.js#11877 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Dynamically Order Dataset Based On Each Value of Any Data Open

type: enhancement

chartjs/Chart.js#11880 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
BUG positioning label inside legend Open

type: bug

chartjs/Chart.js#11884 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Allow border of legend not change according to the type of line in the graph Open

type: enhancement

chartjs/Chart.js#11885 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Chart.js does not work without transpilations as an ES / JS module due to non-relative @kurkle/color imports Open

type: bug

chartjs/Chart.js#11889 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Support for SharedWorkers Open

type: bug

chartjs/Chart.js#11890 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
requestAnimationFrame() polyfill does get applied for dedicated workers for no reason Open

type: bug

chartjs/Chart.js#11891 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
CDNJS is missing latest ChartJS versions Open

type: bug

chartjs/Chart.js#11892 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Array passed as labels option is modified by Chart.js Open

type: bug

chartjs/Chart.js#11893 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Disabling _onPushEvent Open

type: enhancement

chartjs/Chart.js#11894 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Instructions for adding data to a chart do not work for time series data. Open

type: documentation

chartjs/Chart.js#11895 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
some points and line segments remain clipped when setting `clip: false` Open

type: bug

chartjs/Chart.js#11899 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Hover features are not compatible with css zoom property Open

type: bug

chartjs/Chart.js#11900 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Floating-point precision error at zoomed y-axis Open

chartjs/Chart.js#11954 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Chart.js@4.4.4] - [typescript.js@5.5.3] - Type issue with custom positioners using existing positioners as base position. Open

type: types

chartjs/Chart.js#11902 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Tick NumberFormat not working for 0 Open

type: bug

chartjs/Chart.js#11905 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Scales defaults for "grid.color" and "ticks.color" not updating Open

type: bug

chartjs/Chart.js#11910 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Other stepped options Open

type: enhancement

chartjs/Chart.js#11911 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Symmetric logarithmic (symlog) scale Open

type: enhancement

chartjs/Chart.js#11919 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 14, 2026
3.x Migration Guide: `lineTension` => `tension` Open

type: documentation

chartjs/Chart.js#11928 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Chart with live data source + decimation + zoom plugins not drawing new points when samples exceed decimation threshold Open

type: bug

chartjs/Chart.js#11929 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
spanGaps not working near min and max limits Open

type: bug

chartjs/Chart.js#11934 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
rtl options for axis and labels Open

type: enhancement

chartjs/Chart.js#11937 · 2 comments · 11 reactions · 0 assignees · Indexed Sep 14, 2026

A short digest of beginner-friendly GitHub issues.